Results 21 to 30 of about 32,282 (298)
Frontiers in Chemistry, 2019 The CuI-catalyzed Ullmann amine cross-coupling between (hetero)aryl halides (Br, I) and aromatic and aliphatic amines has been accomplished in deep eutectic solvents as environmentally benign and recycling reaction media.
Andrea Francesca Quivelli +3 more
doaj +1 more source
Ligand controlled orthogonal selectivity between distal positions of fully unbiased aliphatic amines
, 2023 Aliphatic C(sp3)‒H bonds are inherently difficult to activate owing to their inertness and chemical indistinguishability. This challenge has been overcome mostly by directing group approach however the regioselectivity in distal aliphatic positions has ...
Nupur, Goswami +7 more
core +1 more source
Spectrophotometric Determination of Microgram Amounts of Aliphatic Amines with Quinalizarin [PDF]
مجلة التربية والعلم, 2009 A simple, rapid and sensitive spectrophotometric method for the determination of aliphatic amines was developed. The method is based on the proton transfer reaction with quinalizarin reagent in aqueous neutral solution to form violet product which shows ...
T. Al-Ghabsha, A. Al-Delymi
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Ceria-Based Mixed Oxide Supported Nano-Gold as an Efficient and Durable Heterogeneous Catalyst for Oxidative Dehydrogenation of Amines to Imines Using Molecular Oxygen [PDF]
, 2012 The present work is intended to determine the catalytic activity of Mixed Oxide supported gold for aerobic oxidative dehydrogenation of amines to imines using Ceria as a main constituent of the each support. The model catalysts Au/CeO2:TiO2 Au/CeO2:SiO2,
Sharma, Meena +5 more
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, 2022 Chiral gamma-branched aliphatic amines are present in a large number of pharmaceuticals and natural products. However, enanti-oselective methods to access these compounds are scarce, and rely on the use of designed chiral transition-metal complexes ...
Victor, García-Vázquez +4 more
core +1 more source
Copper-Catalyzed Alkylation of Aliphatic Amines Induced by Visible Light. [PDF]
J Am Chem Soc, 2017 Although the alkylation of an amine by an alkyl halide serves as a “textbook example” of a nucleophilic substitution reaction, the selective mono-alkylation of aliphatic amines by unactivated, hindered halides persists as a largely unsolved challenge in ...
Matier CD, Schwaben J, Peters JC, Fu GC.
europepmc +2 more sources
Catalytic asymmetric hydroamination of unactivated internal olefins to aliphatic amines [PDF]
, 2015 Available in PMC 2016 July 03.Catalytic assembly of enantiopure aliphatic amines from abundant and readily available precursors has long been recognized as a paramount challenge in synthetic chemistry.
Niu, Dawen +5 more
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Electrochemical Synthesis of Allylic Amines from Alkenes and Amines
, 2021 Allylic amines are valuable synthetic targets en route to diverse biologically active amine products. Current allylic C–H amination strate-gies remain limited with respect to the viable N-substituents.
Zachary, Wickens +2 more
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Michael addition of aromatic and aliphatic amines to unsaturated olefines in the presence of TMSCl under solvent free conditions [PDF]
شیمی کاربردی روز, 2008 An operationally simple and highly fast protocol for TMSCl (10 mol%) catalyzed conjugate addition of aromatic and aliphatic amines derivatives to unsaturated carbonyl compounds in good to excellent yields has been developed.
Najmadin Azizi
doaj +1 more source
Results in Chemistry, 2022 An efficient, fast, and environmentally gentle protocol for phthaloylation of amines, hydrazines and hydrazides via transamidation is described. The current research focuses on the phthaloylation of alicyclic, aliphatic, aromatic, heterocyclic amines ...
Prerna Ganwir +2 more
doaj +1 more source